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[client] Add flag to configure MTU (#4213)

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This commit is contained in:
Viktor Liu
2025-08-26 16:00:14 +02:00
committed by GitHub
parent 9f84165763
commit f063866ce8
54 changed files with 710 additions and 434 deletions
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2
client/cmd/root.go
View File

@@ -39,6 +39,7 @@ const (
extraIFaceBlackListFlag = "extra-iface-blacklist"
dnsRouteIntervalFlag = "dns-router-interval"
enableLazyConnectionFlag = "enable-lazy-connection"
mtuFlag = "mtu"
)
var (
@@ -72,6 +73,7 @@ var (
anonymizeFlag bool
dnsRouteInterval time.Duration
lazyConnEnabled bool
mtu uint16
profilesDisabled bool
updateSettingsDisabled bool

1
client/cmd/root_test.go
View File

@@ -54,6 +54,7 @@ func TestSetFlagsFromEnvVars(t *testing.T) {
cmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "WireGuard interface name")
cmd.PersistentFlags().BoolVar(&rosenpassEnabled, enableRosenpassFlag, false, "Enable Rosenpass feature Rosenpass.")
cmd.PersistentFlags().Uint16Var(&wireguardPort, wireguardPortFlag, iface.DefaultWgPort, "WireGuard interface listening port")
cmd.PersistentFlags().Uint16Var(&mtu, mtuFlag, iface.DefaultMTU, "Set MTU (Maximum Transmission Unit) for the WireGuard interface")
t.Setenv("NB_EXTERNAL_IP_MAP", "abc,dec")
t.Setenv("NB_INTERFACE_NAME", "test-name")

21
client/cmd/up.go
View File

@@ -63,6 +63,7 @@ func init() {
upCmd.PersistentFlags().BoolVarP(&foregroundMode, "foreground-mode", "F", false, "start service in foreground")
upCmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "WireGuard interface name")
upCmd.PersistentFlags().Uint16Var(&wireguardPort, wireguardPortFlag, iface.DefaultWgPort, "WireGuard interface listening port")
upCmd.PersistentFlags().Uint16Var(&mtu, mtuFlag, iface.DefaultMTU, "Set MTU (Maximum Transmission Unit) for the WireGuard interface")
upCmd.PersistentFlags().BoolVarP(&networkMonitor, networkMonitorFlag, "N", networkMonitor,
`Manage network monitoring. Defaults to true on Windows and macOS, false on Linux and FreeBSD. `+
`E.g. --network-monitor=false to disable or --network-monitor=true to enable.`,
@@ -357,6 +358,11 @@ func setupSetConfigReq(customDNSAddressConverted []byte, cmd *cobra.Command, pro
req.WireguardPort = &p
}
if cmd.Flag(mtuFlag).Changed {
m := int64(mtu)
req.Mtu = &m
}
if cmd.Flag(networkMonitorFlag).Changed {
req.NetworkMonitor = &networkMonitor
}
@@ -436,6 +442,13 @@ func setupConfig(customDNSAddressConverted []byte, cmd *cobra.Command, configFil
ic.WireguardPort = &p
}
if cmd.Flag(mtuFlag).Changed {
if err := iface.ValidateMTU(mtu); err != nil {
return nil, err
}
ic.MTU = &mtu
}
if cmd.Flag(networkMonitorFlag).Changed {
ic.NetworkMonitor = &networkMonitor
}
@@ -533,6 +546,14 @@ func setupLoginRequest(providedSetupKey string, customDNSAddressConverted []byte
loginRequest.WireguardPort = &wp
}
if cmd.Flag(mtuFlag).Changed {
if err := iface.ValidateMTU(mtu); err != nil {
return nil, err
}
m := int64(mtu)
loginRequest.Mtu = &m
}
if cmd.Flag(networkMonitorFlag).Changed {
loginRequest.NetworkMonitor = &networkMonitor
}

9
client/iface/bind/ice_bind.go
View File

@@ -56,10 +56,11 @@ type ICEBind struct {
muUDPMux sync.Mutex
udpMux *UniversalUDPMuxDefault
address wgaddr.Address
mtu uint16
activityRecorder *ActivityRecorder
}
func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Address) *ICEBind {
func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Address, mtu uint16) *ICEBind {
b, _ := wgConn.NewStdNetBind().(*wgConn.StdNetBind)
ib := &ICEBind{
StdNetBind: b,
@@ -69,6 +70,7 @@ func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Ad
endpoints: make(map[netip.Addr]net.Conn),
closedChan: make(chan struct{}),
closed: true,
mtu: mtu,
address: address,
activityRecorder: NewActivityRecorder(),
}
@@ -80,6 +82,10 @@ func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Ad
return ib
}
func (s *ICEBind) MTU() uint16 {
return s.mtu
}
func (s *ICEBind) Open(uport uint16) ([]wgConn.ReceiveFunc, uint16, error) {
s.closed = false
s.closedChanMu.Lock()
@@ -158,6 +164,7 @@ func (s *ICEBind) createIPv4ReceiverFn(pc *ipv4.PacketConn, conn *net.UDPConn, r
Net: s.transportNet,
FilterFn: s.filterFn,
WGAddress: s.address,
MTU: s.mtu,
},
)
return func(bufs [][]byte, sizes []int, eps []wgConn.Endpoint) (n int, err error) {

2
client/iface/bind/udp_mux_ios.go
View File

@@ -4,4 +4,4 @@ package bind
func (m *UDPMuxDefault) notifyAddressRemoval(addr string) {
// iOS doesn't support nbnet hooks, so this is a no-op
}
}

4
client/iface/bind/udp_mux_universal.go
View File

@@ -18,6 +18,7 @@ import (
"github.com/pion/stun/v2"
"github.com/pion/transport/v3"
"github.com/netbirdio/netbird/client/iface/bufsize"
"github.com/netbirdio/netbird/client/iface/wgaddr"
)
@@ -44,6 +45,7 @@ type UniversalUDPMuxParams struct {
Net transport.Net
FilterFn FilterFn
WGAddress wgaddr.Address
MTU uint16
}
// NewUniversalUDPMuxDefault creates an implementation of UniversalUDPMux embedding UDPMux
@@ -84,7 +86,7 @@ func NewUniversalUDPMuxDefault(params UniversalUDPMuxParams) *UniversalUDPMuxDef
// just ignore other packets printing an warning message.
// It is a blocking method, consider running in a go routine.
func (m *UniversalUDPMuxDefault) ReadFromConn(ctx context.Context) {
buf := make([]byte, 1500)
buf := make([]byte, m.params.MTU+bufsize.WGBufferOverhead)
for {
select {
case <-ctx.Done():

9
client/iface/bufsize/bufsize.go Normal file
View File

@@ -0,0 +1,9 @@
package bufsize
const (
// WGBufferOverhead represents the additional buffer space needed beyond MTU
// for WireGuard packet encapsulation (WG header + UDP + IP + safety margin)
// Original hardcoded buffers were 1500, default MTU is 1280, so overhead = 220
// TODO: Calculate this properly based on actual protocol overhead instead of using hardcoded difference
WGBufferOverhead = 220
)

1
client/iface/device.go
View File

@@ -17,6 +17,7 @@ type WGTunDevice interface {
Up() (*bind.UniversalUDPMuxDefault, error)
UpdateAddr(address wgaddr.Address) error
WgAddress() wgaddr.Address
MTU() uint16
DeviceName() string
Close() error
FilteredDevice() *device.FilteredDevice

10
client/iface/device/device_android.go
View File

@@ -21,7 +21,7 @@ type WGTunDevice struct {
address wgaddr.Address
port int
key string
mtu int
mtu uint16
iceBind *bind.ICEBind
tunAdapter TunAdapter
disableDNS bool
@@ -33,7 +33,7 @@ type WGTunDevice struct {
configurer WGConfigurer
}
func NewTunDevice(address wgaddr.Address, port int, key string, mtu int, iceBind *bind.ICEBind, tunAdapter TunAdapter, disableDNS bool) *WGTunDevice {
func NewTunDevice(address wgaddr.Address, port int, key string, mtu uint16, iceBind *bind.ICEBind, tunAdapter TunAdapter, disableDNS bool) *WGTunDevice {
return &WGTunDevice{
address: address,
port: port,
@@ -58,7 +58,7 @@ func (t *WGTunDevice) Create(routes []string, dns string, searchDomains []string
searchDomainsToString = ""
}
fd, err := t.tunAdapter.ConfigureInterface(t.address.String(), t.mtu, dns, searchDomainsToString, routesString)
fd, err := t.tunAdapter.ConfigureInterface(t.address.String(), int(t.mtu), dns, searchDomainsToString, routesString)
if err != nil {
log.Errorf("failed to create Android interface: %s", err)
return nil, err
@@ -137,6 +137,10 @@ func (t *WGTunDevice) WgAddress() wgaddr.Address {
return t.address
}
func (t *WGTunDevice) MTU() uint16 {
return t.mtu
}
func (t *WGTunDevice) FilteredDevice() *FilteredDevice {
return t.filteredDevice
}

10
client/iface/device/device_darwin.go
View File

@@ -21,7 +21,7 @@ type TunDevice struct {
address wgaddr.Address
port int
key string
mtu int
mtu uint16
iceBind *bind.ICEBind
device *device.Device
@@ -30,7 +30,7 @@ type TunDevice struct {
configurer WGConfigurer
}
func NewTunDevice(name string, address wgaddr.Address, port int, key string, mtu int, iceBind *bind.ICEBind) *TunDevice {
func NewTunDevice(name string, address wgaddr.Address, port int, key string, mtu uint16, iceBind *bind.ICEBind) *TunDevice {
return &TunDevice{
name: name,
address: address,
@@ -42,7 +42,7 @@ func NewTunDevice(name string, address wgaddr.Address, port int, key string, mtu
}
func (t *TunDevice) Create() (WGConfigurer, error) {
tunDevice, err := tun.CreateTUN(t.name, t.mtu)
tunDevice, err := tun.CreateTUN(t.name, int(t.mtu))
if err != nil {
return nil, fmt.Errorf("error creating tun device: %s", err)
}
@@ -111,6 +111,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address {
return t.address
}
func (t *TunDevice) MTU() uint16 {
return t.mtu
}
func (t *TunDevice) DeviceName() string {
return t.name
}

8
client/iface/device/device_ios.go
View File

@@ -22,6 +22,7 @@ type TunDevice struct {
address wgaddr.Address
port int
key string
mtu uint16
iceBind *bind.ICEBind
tunFd int
@@ -31,12 +32,13 @@ type TunDevice struct {
configurer WGConfigurer
}
func NewTunDevice(name string, address wgaddr.Address, port int, key string, iceBind *bind.ICEBind, tunFd int) *TunDevice {
func NewTunDevice(name string, address wgaddr.Address, port int, key string, mtu uint16, iceBind *bind.ICEBind, tunFd int) *TunDevice {
return &TunDevice{
name: name,
address: address,
port: port,
key: key,
mtu: mtu,
iceBind: iceBind,
tunFd: tunFd,
}
@@ -125,6 +127,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address {
return t.address
}
func (t *TunDevice) MTU() uint16 {
return t.mtu
}
func (t *TunDevice) UpdateAddr(_ wgaddr.Address) error {
// todo implement
return nil

13
client/iface/device/device_kernel_unix.go
View File

@@ -24,7 +24,7 @@ type TunKernelDevice struct {
address wgaddr.Address
wgPort int
key string
mtu int
mtu uint16
ctx context.Context
ctxCancel context.CancelFunc
transportNet transport.Net
@@ -36,7 +36,7 @@ type TunKernelDevice struct {
filterFn bind.FilterFn
}
func NewKernelDevice(name string, address wgaddr.Address, wgPort int, key string, mtu int, transportNet transport.Net) *TunKernelDevice {
func NewKernelDevice(name string, address wgaddr.Address, wgPort int, key string, mtu uint16, transportNet transport.Net) *TunKernelDevice {
ctx, cancel := context.WithCancel(context.Background())
return &TunKernelDevice{
ctx: ctx,
@@ -66,7 +66,7 @@ func (t *TunKernelDevice) Create() (WGConfigurer, error) {
// TODO: do a MTU discovery
log.Debugf("setting MTU: %d interface: %s", t.mtu, t.name)
if err := link.setMTU(t.mtu); err != nil {
if err := link.setMTU(int(t.mtu)); err != nil {
return nil, fmt.Errorf("set mtu: %w", err)
}
@@ -96,7 +96,7 @@ func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
return nil, err
}
rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter())
rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter(), t.mtu)
if err != nil {
return nil, err
}
@@ -111,6 +111,7 @@ func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
Net: t.transportNet,
FilterFn: t.filterFn,
WGAddress: t.address,
MTU: t.mtu,
}
mux := bind.NewUniversalUDPMuxDefault(bindParams)
go mux.ReadFromConn(t.ctx)
@@ -158,6 +159,10 @@ func (t *TunKernelDevice) WgAddress() wgaddr.Address {
return t.address
}
func (t *TunKernelDevice) MTU() uint16 {
return t.mtu
}
func (t *TunKernelDevice) DeviceName() string {
return t.name
}

10
client/iface/device/device_netstack.go
View File

@@ -19,7 +19,7 @@ type TunNetstackDevice struct {
address wgaddr.Address
port int
key string
mtu int
mtu uint16
listenAddress string
iceBind *bind.ICEBind
@@ -32,7 +32,7 @@ type TunNetstackDevice struct {
net *netstack.Net
}
func NewNetstackDevice(name string, address wgaddr.Address, wgPort int, key string, mtu int, iceBind *bind.ICEBind, listenAddress string) *TunNetstackDevice {
func NewNetstackDevice(name string, address wgaddr.Address, wgPort int, key string, mtu uint16, iceBind *bind.ICEBind, listenAddress string) *TunNetstackDevice {
return &TunNetstackDevice{
name: name,
address: address,
@@ -54,7 +54,7 @@ func (t *TunNetstackDevice) create() (WGConfigurer, error) {
}
log.Debugf("netstack using address: %s", t.address.IP)
t.nsTun = nbnetstack.NewNetStackTun(t.listenAddress, t.address.IP, dnsAddr, t.mtu)
t.nsTun = nbnetstack.NewNetStackTun(t.listenAddress, t.address.IP, dnsAddr, int(t.mtu))
log.Debugf("netstack using dns address: %s", dnsAddr)
tunIface, net, err := t.nsTun.Create()
if err != nil {
@@ -122,6 +122,10 @@ func (t *TunNetstackDevice) WgAddress() wgaddr.Address {
return t.address
}
func (t *TunNetstackDevice) MTU() uint16 {
return t.mtu
}
func (t *TunNetstackDevice) DeviceName() string {
return t.name
}

12
client/iface/device/device_usp_unix.go
View File

@@ -20,7 +20,7 @@ type USPDevice struct {
address wgaddr.Address
port int
key string
mtu int
mtu uint16
iceBind *bind.ICEBind
device *device.Device
@@ -29,7 +29,7 @@ type USPDevice struct {
configurer WGConfigurer
}
func NewUSPDevice(name string, address wgaddr.Address, port int, key string, mtu int, iceBind *bind.ICEBind) *USPDevice {
func NewUSPDevice(name string, address wgaddr.Address, port int, key string, mtu uint16, iceBind *bind.ICEBind) *USPDevice {
log.Infof("using userspace bind mode")
return &USPDevice{
@@ -44,9 +44,9 @@ func NewUSPDevice(name string, address wgaddr.Address, port int, key string, mtu
func (t *USPDevice) Create() (WGConfigurer, error) {
log.Info("create tun interface")
tunIface, err := tun.CreateTUN(t.name, t.mtu)
tunIface, err := tun.CreateTUN(t.name, int(t.mtu))
if err != nil {
log.Debugf("failed to create tun interface (%s, %d): %s", t.name, t.mtu, err)
log.Debugf("failed to create tun interface (%s, %d): %s", t.name, int(t.mtu), err)
return nil, fmt.Errorf("error creating tun device: %s", err)
}
t.filteredDevice = newDeviceFilter(tunIface)
@@ -118,6 +118,10 @@ func (t *USPDevice) WgAddress() wgaddr.Address {
return t.address
}
func (t *USPDevice) MTU() uint16 {
return t.mtu
}
func (t *USPDevice) DeviceName() string {
return t.name
}

10
client/iface/device/device_windows.go
View File

@@ -23,7 +23,7 @@ type TunDevice struct {
address wgaddr.Address
port int
key string
mtu int
mtu uint16
iceBind *bind.ICEBind
device *device.Device
@@ -33,7 +33,7 @@ type TunDevice struct {
configurer WGConfigurer
}
func NewTunDevice(name string, address wgaddr.Address, port int, key string, mtu int, iceBind *bind.ICEBind) *TunDevice {
func NewTunDevice(name string, address wgaddr.Address, port int, key string, mtu uint16, iceBind *bind.ICEBind) *TunDevice {
return &TunDevice{
name: name,
address: address,
@@ -59,7 +59,7 @@ func (t *TunDevice) Create() (WGConfigurer, error) {
return nil, err
}
log.Info("create tun interface")
tunDevice, err := tun.CreateTUNWithRequestedGUID(t.name, &guid, t.mtu)
tunDevice, err := tun.CreateTUNWithRequestedGUID(t.name, &guid, int(t.mtu))
if err != nil {
return nil, fmt.Errorf("error creating tun device: %s", err)
}
@@ -144,6 +144,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address {
return t.address
}
func (t *TunDevice) MTU() uint16 {
return t.mtu
}
func (t *TunDevice) DeviceName() string {
return t.name
}

1
client/iface/device_android.go
View File

@@ -15,6 +15,7 @@ type WGTunDevice interface {
Up() (*bind.UniversalUDPMuxDefault, error)
UpdateAddr(address wgaddr.Address) error
WgAddress() wgaddr.Address
MTU() uint16
DeviceName() string
Close() error
FilteredDevice() *device.FilteredDevice

19
client/iface/iface.go
View File

@@ -26,6 +26,8 @@ import (
const (
DefaultMTU = 1280
MinMTU = 576
MaxMTU = 8192
DefaultWgPort = 51820
WgInterfaceDefault = configurer.WgInterfaceDefault
)
@@ -35,6 +37,17 @@ var (
ErrIfaceNotFound = fmt.Errorf("wireguard interface not found")
)
// ValidateMTU validates that MTU is within acceptable range
func ValidateMTU(mtu uint16) error {
if mtu < MinMTU {
return fmt.Errorf("MTU %d below minimum (%d bytes)", mtu, MinMTU)
}
if mtu > MaxMTU {
return fmt.Errorf("MTU %d exceeds maximum supported size (%d bytes)", mtu, MaxMTU)
}
return nil
}
type wgProxyFactory interface {
GetProxy() wgproxy.Proxy
Free() error
@@ -45,7 +58,7 @@ type WGIFaceOpts struct {
Address string
WGPort int
WGPrivKey string
MTU int
MTU uint16
MobileArgs *device.MobileIFaceArguments
TransportNet transport.Net
FilterFn bind.FilterFn
@@ -82,6 +95,10 @@ func (w *WGIface) Address() wgaddr.Address {
return w.tun.WgAddress()
}
func (w *WGIface) MTU() uint16 {
return w.tun.MTU()
}
// ToInterface returns the net.Interface for the Wireguard interface
func (r *WGIface) ToInterface() *net.Interface {
name := r.tun.DeviceName()

2
client/iface/iface_new_android.go
View File

@@ -15,7 +15,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
return nil, err
}
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress)
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
if netstack.IsEnabled() {
wgIFace := &WGIface{

2
client/iface/iface_new_darwin.go
View File

@@ -17,7 +17,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
return nil, err
}
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress)
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
var tun WGTunDevice
if netstack.IsEnabled() {

4
client/iface/iface_new_ios.go
View File

@@ -16,10 +16,10 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
return nil, err
}
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress)
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
wgIFace := &WGIface{
tun: device.NewTunDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, iceBind, opts.MobileArgs.TunFd),
tun: device.NewTunDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind, opts.MobileArgs.TunFd),
userspaceBind: true,
wgProxyFactory: wgproxy.NewUSPFactory(iceBind),
}

6
client/iface/iface_new_unix.go
View File

@@ -22,7 +22,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
wgIFace := &WGIface{}
if netstack.IsEnabled() {
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress)
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
wgIFace.tun = device.NewNetstackDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind, netstack.ListenAddr())
wgIFace.userspaceBind = true
wgIFace.wgProxyFactory = wgproxy.NewUSPFactory(iceBind)
@@ -31,11 +31,11 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
if device.WireGuardModuleIsLoaded() {
wgIFace.tun = device.NewKernelDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, opts.TransportNet)
wgIFace.wgProxyFactory = wgproxy.NewKernelFactory(opts.WGPort)
wgIFace.wgProxyFactory = wgproxy.NewKernelFactory(opts.WGPort, opts.MTU)
return wgIFace, nil
}
if device.ModuleTunIsLoaded() {
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress)
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
wgIFace.tun = device.NewUSPDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind)
wgIFace.userspaceBind = true
wgIFace.wgProxyFactory = wgproxy.NewUSPFactory(iceBind)

2
client/iface/iface_new_windows.go
View File

@@ -14,7 +14,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
if err != nil {
return nil, err
}
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress)
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
var tun WGTunDevice
if netstack.IsEnabled() {

3
client/iface/wgproxy/bind/proxy.go
View File

@@ -12,6 +12,7 @@ import (
log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/iface/bind"
"github.com/netbirdio/netbird/client/iface/bufsize"
"github.com/netbirdio/netbird/client/iface/wgproxy/listener"
)
@@ -135,7 +136,7 @@ func (p *ProxyBind) proxyToLocal(ctx context.Context) {
}()
for {
buf := make([]byte, 1500)
buf := make([]byte, p.Bind.MTU()+bufsize.WGBufferOverhead)
n, err := p.remoteConn.Read(buf)
if err != nil {
if ctx.Err() != nil {

7
client/iface/wgproxy/ebpf/proxy.go
View File

@@ -17,6 +17,7 @@ import (
log "github.com/sirupsen/logrus"
nberrors "github.com/netbirdio/netbird/client/errors"
"github.com/netbirdio/netbird/client/iface/bufsize"
"github.com/netbirdio/netbird/client/internal/ebpf"
ebpfMgr "github.com/netbirdio/netbird/client/internal/ebpf/manager"
nbnet "github.com/netbirdio/netbird/util/net"
@@ -29,6 +30,7 @@ const (
// WGEBPFProxy definition for proxy with EBPF support
type WGEBPFProxy struct {
localWGListenPort int
mtu uint16
ebpfManager ebpfMgr.Manager
turnConnStore map[uint16]net.Conn
@@ -43,10 +45,11 @@ type WGEBPFProxy struct {
}
// NewWGEBPFProxy create new WGEBPFProxy instance
func NewWGEBPFProxy(wgPort int) *WGEBPFProxy {
func NewWGEBPFProxy(wgPort int, mtu uint16) *WGEBPFProxy {
log.Debugf("instantiate ebpf proxy")
wgProxy := &WGEBPFProxy{
localWGListenPort: wgPort,
mtu: mtu,
ebpfManager: ebpf.GetEbpfManagerInstance(),
turnConnStore: make(map[uint16]net.Conn),
}
@@ -138,7 +141,7 @@ func (p *WGEBPFProxy) Free() error {
// proxyToRemote read messages from local WireGuard interface and forward it to remote conn
// From this go routine has only one instance.
func (p *WGEBPFProxy) proxyToRemote() {
buf := make([]byte, 1500)
buf := make([]byte, p.mtu+bufsize.WGBufferOverhead)
for p.ctx.Err() == nil {
if err := p.readAndForwardPacket(buf); err != nil {
if p.ctx.Err() != nil {

6
client/iface/wgproxy/ebpf/proxy_test.go
View File

@@ -7,7 +7,7 @@ import (
)
func TestWGEBPFProxy_connStore(t *testing.T) {
wgProxy := NewWGEBPFProxy(1)
wgProxy := NewWGEBPFProxy(1, 1280)
p, _ := wgProxy.storeTurnConn(nil)
if p != 1 {
@@ -27,7 +27,7 @@ func TestWGEBPFProxy_connStore(t *testing.T) {
}
func TestWGEBPFProxy_portCalculation_overflow(t *testing.T) {
wgProxy := NewWGEBPFProxy(1)
wgProxy := NewWGEBPFProxy(1, 1280)
_, _ = wgProxy.storeTurnConn(nil)
wgProxy.lastUsedPort = 65535
@@ -43,7 +43,7 @@ func TestWGEBPFProxy_portCalculation_overflow(t *testing.T) {
}
func TestWGEBPFProxy_portCalculation_maxConn(t *testing.T) {
wgProxy := NewWGEBPFProxy(1)
wgProxy := NewWGEBPFProxy(1, 1280)
for i := 0; i < 65535; i++ {
_, _ = wgProxy.storeTurnConn(nil)

3
client/iface/wgproxy/ebpf/wrapper.go
View File

@@ -12,6 +12,7 @@ import (
log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/iface/bufsize"
"github.com/netbirdio/netbird/client/iface/wgproxy/listener"
)
@@ -103,7 +104,7 @@ func (e *ProxyWrapper) CloseConn() error {
func (p *ProxyWrapper) proxyToLocal(ctx context.Context) {
defer p.WgeBPFProxy.removeTurnConn(uint16(p.wgEndpointAddr.Port))
buf := make([]byte, 1500)
buf := make([]byte, p.WgeBPFProxy.mtu+bufsize.WGBufferOverhead)
for {
n, err := p.readFromRemote(ctx, buf)
if err != nil {

8
client/iface/wgproxy/factory_kernel.go
View File

@@ -11,16 +11,18 @@ import (
type KernelFactory struct {
wgPort int
mtu uint16
ebpfProxy *ebpf.WGEBPFProxy
}
func NewKernelFactory(wgPort int) *KernelFactory {
func NewKernelFactory(wgPort int, mtu uint16) *KernelFactory {
f := &KernelFactory{
wgPort: wgPort,
mtu: mtu,
}
ebpfProxy := ebpf.NewWGEBPFProxy(wgPort)
ebpfProxy := ebpf.NewWGEBPFProxy(wgPort, mtu)
if err := ebpfProxy.Listen(); err != nil {
log.Infof("WireGuard Proxy Factory will produce UDP proxy")
log.Warnf("failed to initialize ebpf proxy, fallback to user space proxy: %s", err)
@@ -33,7 +35,7 @@ func NewKernelFactory(wgPort int) *KernelFactory {
func (w *KernelFactory) GetProxy() Proxy {
if w.ebpfProxy == nil {
return udpProxy.NewWGUDPProxy(w.wgPort)
return udpProxy.NewWGUDPProxy(w.wgPort, w.mtu)
}
return ebpf.NewProxyWrapper(w.ebpfProxy)

6
client/iface/wgproxy/factory_kernel_freebsd.go
View File

@@ -9,19 +9,21 @@ import (
// KernelFactory todo: check eBPF support on FreeBSD
type KernelFactory struct {
wgPort int
mtu uint16
}
func NewKernelFactory(wgPort int) *KernelFactory {
func NewKernelFactory(wgPort int, mtu uint16) *KernelFactory {
log.Infof("WireGuard Proxy Factory will produce UDP proxy")
f := &KernelFactory{
wgPort: wgPort,
mtu: mtu,
}
return f
}
func (w *KernelFactory) GetProxy() Proxy {
return udpProxy.NewWGUDPProxy(w.wgPort)
return udpProxy.NewWGUDPProxy(w.wgPort, w.mtu)
}
func (w *KernelFactory) Free() error {

2
client/iface/wgproxy/proxy_linux_test.go
View File

@@ -16,7 +16,7 @@ func TestProxyCloseByRemoteConnEBPF(t *testing.T) {
}
ctx := context.Background()
ebpfProxy := ebpf.NewWGEBPFProxy(51831)
ebpfProxy := ebpf.NewWGEBPFProxy(51831, 1280)
if err := ebpfProxy.Listen(); err != nil {
t.Fatalf("failed to initialize ebpf proxy: %s", err)
}

4
client/iface/wgproxy/proxy_test.go
View File

@@ -84,12 +84,12 @@ func TestProxyCloseByRemoteConn(t *testing.T) {
}{
{
name: "userspace proxy",
proxy: udpProxy.NewWGUDPProxy(51830),
proxy: udpProxy.NewWGUDPProxy(51830, 1280),
},
}
if runtime.GOOS == "linux" && os.Getenv("GITHUB_ACTIONS") != "true" {
ebpfProxy := ebpf.NewWGEBPFProxy(51831)
ebpfProxy := ebpf.NewWGEBPFProxy(51831, 1280)
if err := ebpfProxy.Listen(); err != nil {
t.Fatalf("failed to initialize ebpf proxy: %s", err)
}

9
client/iface/wgproxy/udp/proxy.go
View File

@@ -12,12 +12,14 @@ import (
log "github.com/sirupsen/logrus"
cerrors "github.com/netbirdio/netbird/client/errors"
"github.com/netbirdio/netbird/client/iface/bufsize"
"github.com/netbirdio/netbird/client/iface/wgproxy/listener"
)
// WGUDPProxy proxies
type WGUDPProxy struct {
localWGListenPort int
mtu uint16
remoteConn net.Conn
localConn net.Conn
@@ -34,10 +36,11 @@ type WGUDPProxy struct {
}
// NewWGUDPProxy instantiate a UDP based WireGuard proxy. This is not a thread safe implementation
func NewWGUDPProxy(wgPort int) *WGUDPProxy {
func NewWGUDPProxy(wgPort int, mtu uint16) *WGUDPProxy {
log.Debugf("Initializing new user space proxy with port %d", wgPort)
p := &WGUDPProxy{
localWGListenPort: wgPort,
mtu: mtu,
closeListener: listener.NewCloseListener(),
}
return p
@@ -144,7 +147,7 @@ func (p *WGUDPProxy) proxyToRemote(ctx context.Context) {
}
}()
buf := make([]byte, 1500)
buf := make([]byte, p.mtu+bufsize.WGBufferOverhead)
for ctx.Err() == nil {
n, err := p.localConn.Read(buf)
if err != nil {
@@ -179,7 +182,7 @@ func (p *WGUDPProxy) proxyToLocal(ctx context.Context) {
}
}()
buf := make([]byte, 1500)
buf := make([]byte, p.mtu+bufsize.WGBufferOverhead)
for {
n, err := p.remoteConnRead(ctx, buf)
if err != nil {

35
client/internal/connect.go
View File

@@ -18,6 +18,7 @@ import (
"google.golang.org/grpc/codes"
gstatus "google.golang.org/grpc/status"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/client/iface/device"
"github.com/netbirdio/netbird/client/internal/dns"
"github.com/netbirdio/netbird/client/internal/listener"
@@ -244,7 +245,15 @@ func (c *ConnectClient) run(mobileDependency MobileDependency, runningChan chan
c.statusRecorder.MarkSignalConnected()
relayURLs, token := parseRelayInfo(loginResp)
relayManager := relayClient.NewManager(engineCtx, relayURLs, myPrivateKey.PublicKey().String())
peerConfig := loginResp.GetPeerConfig()
engineConfig, err := createEngineConfig(myPrivateKey, c.config, peerConfig)
if err != nil {
log.Error(err)
return wrapErr(err)
}
relayManager := relayClient.NewManager(engineCtx, relayURLs, myPrivateKey.PublicKey().String(), engineConfig.MTU)
c.statusRecorder.SetRelayMgr(relayManager)
if len(relayURLs) > 0 {
if token != nil {
@@ -259,14 +268,6 @@ func (c *ConnectClient) run(mobileDependency MobileDependency, runningChan chan
}
}
peerConfig := loginResp.GetPeerConfig()
engineConfig, err := createEngineConfig(myPrivateKey, c.config, peerConfig)
if err != nil {
log.Error(err)
return wrapErr(err)
}
checks := loginResp.GetChecks()
c.engineMutex.Lock()
@@ -444,6 +445,8 @@ func createEngineConfig(key wgtypes.Key, config *profilemanager.Config, peerConf
BlockInbound: config.BlockInbound,
LazyConnectionEnabled: config.LazyConnectionEnabled,
MTU: selectMTU(config.MTU, peerConfig.Mtu),
}
if config.PreSharedKey != "" {
@@ -466,6 +469,20 @@ func createEngineConfig(key wgtypes.Key, config *profilemanager.Config, peerConf
return engineConf, nil
}
func selectMTU(localMTU uint16, peerMTU int32) uint16 {
var finalMTU uint16 = iface.DefaultMTU
if localMTU > 0 {
finalMTU = localMTU
} else if peerMTU > 0 {
finalMTU = uint16(peerMTU)
}
// Set global DNS MTU
dns.SetCurrentMTU(finalMTU)
return finalMTU
}
// connectToSignal creates Signal Service client and established a connection
func connectToSignal(ctx context.Context, wtConfig *mgmProto.NetbirdConfig, ourPrivateKey wgtypes.Key) (*signal.GrpcClient, error) {
var sigTLSEnabled bool

10
client/internal/dns/upstream.go
View File

@@ -26,6 +26,12 @@ import (
"github.com/netbirdio/netbird/client/proto"
)
var currentMTU uint16 = iface.DefaultMTU
func SetCurrentMTU(mtu uint16) {
currentMTU = mtu
}
const (
UpstreamTimeout = 15 * time.Second
@@ -358,8 +364,8 @@ func (u *upstreamResolverBase) testNameserver(server netip.AddrPort, timeout tim
// If the passed context is nil, this will use Exchange instead of ExchangeContext.
func ExchangeWithFallback(ctx context.Context, client *dns.Client, r *dns.Msg, upstream string) (*dns.Msg, time.Duration, error) {
// MTU - ip + udp headers
// Note: this could be sent out on an interface that is not ours, but our MTU should always be lower.
client.UDPSize = iface.DefaultMTU - (60 + 8)
// Note: this could be sent out on an interface that is not ours, but higher MTU settings could break truncation handling.
client.UDPSize = uint16(currentMTU - (60 + 8))
var (
rm *dns.Msg

8
client/internal/engine.go
View File

@@ -125,6 +125,8 @@ type EngineConfig struct {
BlockInbound bool
LazyConnectionEnabled bool
MTU uint16
}
// Engine is a mechanism responsible for reacting on Signal and Management stream events and managing connections to the remote peers.
@@ -347,6 +349,10 @@ func (e *Engine) Start() error {
e.syncMsgMux.Lock()
defer e.syncMsgMux.Unlock()
if err := iface.ValidateMTU(e.config.MTU); err != nil {
return fmt.Errorf("invalid MTU configuration: %w", err)
}
if e.cancel != nil {
e.cancel()
}
@@ -1492,7 +1498,7 @@ func (e *Engine) newWgIface() (*iface.WGIface, error) {
Address: e.config.WgAddr,
WGPort: e.config.WgPort,
WGPrivKey: e.config.WgPrivateKey.String(),
MTU: iface.DefaultMTU,
MTU: e.config.MTU,
TransportNet: transportNet,
FilterFn: e.addrViaRoutes,
DisableDNS: e.config.DisableDNS,

21
client/internal/engine_test.go
View File

@@ -218,7 +218,7 @@ func TestEngine_SSH(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String())
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String(), iface.DefaultMTU)
engine := NewEngine(
ctx, cancel,
&signal.MockClient{},
@@ -230,6 +230,7 @@ func TestEngine_SSH(t *testing.T) {
WgPrivateKey: key,
WgPort: 33100,
ServerSSHAllowed: true,
MTU: iface.DefaultMTU,
},
MobileDependency{},
peer.NewRecorder("https://mgm"),
@@ -363,7 +364,7 @@ func TestEngine_UpdateNetworkMap(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String())
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String(), iface.DefaultMTU)
engine := NewEngine(
ctx, cancel,
&signal.MockClient{},
@@ -374,6 +375,7 @@ func TestEngine_UpdateNetworkMap(t *testing.T) {
WgAddr: "100.64.0.1/24",
WgPrivateKey: key,
WgPort: 33100,
MTU: iface.DefaultMTU,
},
MobileDependency{},
peer.NewRecorder("https://mgm"),
@@ -412,7 +414,7 @@ func TestEngine_UpdateNetworkMap(t *testing.T) {
if err != nil {
t.Fatal(err)
}
engine.udpMux = bind.NewUniversalUDPMuxDefault(bind.UniversalUDPMuxParams{UDPConn: conn})
engine.udpMux = bind.NewUniversalUDPMuxDefault(bind.UniversalUDPMuxParams{UDPConn: conn, MTU: 1280})
engine.ctx = ctx
engine.srWatcher = guard.NewSRWatcher(nil, nil, nil, icemaker.Config{})
engine.connMgr = NewConnMgr(engine.config, engine.statusRecorder, engine.peerStore, wgIface)
@@ -589,12 +591,13 @@ func TestEngine_Sync(t *testing.T) {
}
return nil
}
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String())
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String(), iface.DefaultMTU)
engine := NewEngine(ctx, cancel, &signal.MockClient{}, &mgmt.MockClient{SyncFunc: syncFunc}, relayMgr, &EngineConfig{
WgIfaceName: "utun103",
WgAddr: "100.64.0.1/24",
WgPrivateKey: key,
WgPort: 33100,
MTU: iface.DefaultMTU,
}, MobileDependency{}, peer.NewRecorder("https://mgm"), nil)
engine.ctx = ctx
@@ -753,12 +756,13 @@ func TestEngine_UpdateNetworkMapWithRoutes(t *testing.T) {
wgIfaceName := fmt.Sprintf("utun%d", 104+n)
wgAddr := fmt.Sprintf("100.66.%d.1/24", n)
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String())
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String(), iface.DefaultMTU)
engine := NewEngine(ctx, cancel, &signal.MockClient{}, &mgmt.MockClient{}, relayMgr, &EngineConfig{
WgIfaceName: wgIfaceName,
WgAddr: wgAddr,
WgPrivateKey: key,
WgPort: 33100,
MTU: iface.DefaultMTU,
}, MobileDependency{}, peer.NewRecorder("https://mgm"), nil)
engine.ctx = ctx
newNet, err := stdnet.NewNet()
@@ -954,12 +958,13 @@ func TestEngine_UpdateNetworkMapWithDNSUpdate(t *testing.T) {
wgIfaceName := fmt.Sprintf("utun%d", 104+n)
wgAddr := fmt.Sprintf("100.66.%d.1/24", n)
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String())
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String(), iface.DefaultMTU)
engine := NewEngine(ctx, cancel, &signal.MockClient{}, &mgmt.MockClient{}, relayMgr, &EngineConfig{
WgIfaceName: wgIfaceName,
WgAddr: wgAddr,
WgPrivateKey: key,
WgPort: 33100,
MTU: iface.DefaultMTU,
}, MobileDependency{}, peer.NewRecorder("https://mgm"), nil)
engine.ctx = ctx
@@ -1181,6 +1186,7 @@ func Test_ParseNATExternalIPMappings(t *testing.T) {
config: &EngineConfig{
IFaceBlackList: testCase.inputBlacklistInterface,
NATExternalIPs: testCase.inputMapList,
MTU: iface.DefaultMTU,
},
}
parsedList := engine.parseNATExternalIPMappings()
@@ -1481,9 +1487,10 @@ func createEngine(ctx context.Context, cancel context.CancelFunc, setupKey strin
WgAddr: resp.PeerConfig.Address,
WgPrivateKey: key,
WgPort: wgPort,
MTU: iface.DefaultMTU,
}
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String())
relayMgr := relayClient.NewManager(ctx, nil, key.PublicKey().String(), iface.DefaultMTU)
e, err := NewEngine(ctx, cancel, signalClient, mgmtClient, relayMgr, conf, MobileDependency{}, peer.NewRecorder("https://mgm"), nil), nil
e.ctx = ctx
return e, err

14
client/internal/profilemanager/config.go
View File

@@ -75,6 +75,8 @@ type ConfigInput struct {
DNSLabels domain.List
LazyConnectionEnabled *bool
MTU *uint16
}
// Config Configuration type
@@ -141,6 +143,8 @@ type Config struct {
ClientCertKeyPair *tls.Certificate `json:"-"`
LazyConnectionEnabled bool
MTU uint16
}
var ConfigDirOverride string
@@ -493,6 +497,16 @@ func (config *Config) apply(input ConfigInput) (updated bool, err error) {
updated = true
}
if input.MTU != nil && *input.MTU != config.MTU {
log.Infof("updating MTU to %d (old value %d)", *input.MTU, config.MTU)
config.MTU = *input.MTU
updated = true
} else if config.MTU == 0 {
config.MTU = iface.DefaultMTU
log.Infof("using default MTU %d", config.MTU)
updated = true
}
return updated, nil
}

2
client/internal/routemanager/systemops/systemops_windows.go
View File

@@ -336,7 +336,7 @@ func createIPForwardEntry2(route *MIB_IPFORWARD_ROW2) error {
if e1 != 0 {
return fmt.Errorf("CreateIpForwardEntry2: %w", e1)
}
return fmt.Errorf("CreateIpForwardEntry2: code %d", r1)
return fmt.Errorf("CreateIpForwardEntry2: code %d", windows.NTStatus(r1))
}
return nil
}

45
client/proto/daemon.pb.go
View File

@@ -278,6 +278,7 @@ type LoginRequest struct {
BlockInbound *bool `protobuf:"varint,29,opt,name=block_inbound,json=blockInbound,proto3,oneof" json:"block_inbound,omitempty"`
ProfileName *string `protobuf:"bytes,30,opt,name=profileName,proto3,oneof" json:"profileName,omitempty"`
Username *string `protobuf:"bytes,31,opt,name=username,proto3,oneof" json:"username,omitempty"`
Mtu *int64 `protobuf:"varint,32,opt,name=mtu,proto3,oneof" json:"mtu,omitempty"`
unknownFields protoimpl.UnknownFields
sizeCache protoimpl.SizeCache
}
@@ -530,6 +531,13 @@ func (x *LoginRequest) GetUsername() string {
return ""
}
func (x *LoginRequest) GetMtu() int64 {
if x != nil && x.Mtu != nil {
return *x.Mtu
}
return 0
}
type LoginResponse struct {
state protoimpl.MessageState `protogen:"open.v1"`
NeedsSSOLogin bool `protobuf:"varint,1,opt,name=needsSSOLogin,proto3" json:"needsSSOLogin,omitempty"`
@@ -1034,6 +1042,7 @@ type GetConfigResponse struct {
AdminURL string `protobuf:"bytes,5,opt,name=adminURL,proto3" json:"adminURL,omitempty"`
InterfaceName string `protobuf:"bytes,6,opt,name=interfaceName,proto3" json:"interfaceName,omitempty"`
WireguardPort int64 `protobuf:"varint,7,opt,name=wireguardPort,proto3" json:"wireguardPort,omitempty"`
Mtu int64 `protobuf:"varint,8,opt,name=mtu,proto3" json:"mtu,omitempty"`
DisableAutoConnect bool `protobuf:"varint,9,opt,name=disableAutoConnect,proto3" json:"disableAutoConnect,omitempty"`
ServerSSHAllowed bool `protobuf:"varint,10,opt,name=serverSSHAllowed,proto3" json:"serverSSHAllowed,omitempty"`
RosenpassEnabled bool `protobuf:"varint,11,opt,name=rosenpassEnabled,proto3" json:"rosenpassEnabled,omitempty"`
@@ -1129,6 +1138,13 @@ func (x *GetConfigResponse) GetWireguardPort() int64 {
return 0
}
func (x *GetConfigResponse) GetMtu() int64 {
if x != nil {
return x.Mtu
}
return 0
}
func (x *GetConfigResponse) GetDisableAutoConnect() bool {
if x != nil {
return x.DisableAutoConnect
@@ -3679,6 +3695,7 @@ type SetConfigRequest struct {
// cleanDNSLabels clean map list of DNS labels.
CleanDNSLabels bool `protobuf:"varint,26,opt,name=cleanDNSLabels,proto3" json:"cleanDNSLabels,omitempty"`
DnsRouteInterval *durationpb.Duration `protobuf:"bytes,27,opt,name=dnsRouteInterval,proto3,oneof" json:"dnsRouteInterval,omitempty"`
Mtu *int64 `protobuf:"varint,28,opt,name=mtu,proto3,oneof" json:"mtu,omitempty"`
unknownFields protoimpl.UnknownFields
sizeCache protoimpl.SizeCache
}
@@ -3902,6 +3919,13 @@ func (x *SetConfigRequest) GetDnsRouteInterval() *durationpb.Duration {
return nil
}
func (x *SetConfigRequest) GetMtu() int64 {
if x != nil && x.Mtu != nil {
return *x.Mtu
}
return 0
}
type SetConfigResponse struct {
state protoimpl.MessageState `protogen:"open.v1"`
unknownFields protoimpl.UnknownFields
@@ -4575,7 +4599,7 @@ var File_daemon_proto protoreflect.FileDescriptor
const file_daemon_proto_rawDesc = "" +
"\n" +
"\fdaemon.proto\x12\x06daemon\x1a google/protobuf/descriptor.proto\x1a\x1fgoogle/protobuf/timestamp.proto\x1a\x1egoogle/protobuf/duration.proto\"\x0e\n" +
"\fEmptyRequest\"\xa4\x0e\n" +
"\fEmptyRequest\"\xc3\x0e\n" +
"\fLoginRequest\x12\x1a\n" +
"\bsetupKey\x18\x01 \x01(\tR\bsetupKey\x12&\n" +
"\fpreSharedKey\x18\x02 \x01(\tB\x02\x18\x01R\fpreSharedKey\x12$\n" +
@@ -4611,7 +4635,8 @@ const file_daemon_proto_rawDesc = "" +
"\x15lazyConnectionEnabled\x18\x1c \x01(\bH\x0fR\x15lazyConnectionEnabled\x88\x01\x01\x12(\n" +
"\rblock_inbound\x18\x1d \x01(\bH\x10R\fblockInbound\x88\x01\x01\x12%\n" +
"\vprofileName\x18\x1e \x01(\tH\x11R\vprofileName\x88\x01\x01\x12\x1f\n" +
"\busername\x18\x1f \x01(\tH\x12R\busername\x88\x01\x01B\x13\n" +
"\busername\x18\x1f \x01(\tH\x12R\busername\x88\x01\x01\x12\x15\n" +
"\x03mtu\x18 \x01(\x03H\x13R\x03mtu\x88\x01\x01B\x13\n" +
"\x11_rosenpassEnabledB\x10\n" +
"\x0e_interfaceNameB\x10\n" +
"\x0e_wireguardPortB\x17\n" +
@@ -4630,7 +4655,8 @@ const file_daemon_proto_rawDesc = "" +
"\x16_lazyConnectionEnabledB\x10\n" +
"\x0e_block_inboundB\x0e\n" +
"\f_profileNameB\v\n" +
"\t_username\"\xb5\x01\n" +
"\t_usernameB\x06\n" +
"\x04_mtu\"\xb5\x01\n" +
"\rLoginResponse\x12$\n" +
"\rneedsSSOLogin\x18\x01 \x01(\bR\rneedsSSOLogin\x12\x1a\n" +
"\buserCode\x18\x02 \x01(\tR\buserCode\x12(\n" +
@@ -4661,7 +4687,7 @@ const file_daemon_proto_rawDesc = "" +
"\fDownResponse\"P\n" +
"\x10GetConfigRequest\x12 \n" +
"\vprofileName\x18\x01 \x01(\tR\vprofileName\x12\x1a\n" +
"\busername\x18\x02 \x01(\tR\busername\"\xa3\x06\n" +
"\busername\x18\x02 \x01(\tR\busername\"\xb5\x06\n" +
"\x11GetConfigResponse\x12$\n" +
"\rmanagementUrl\x18\x01 \x01(\tR\rmanagementUrl\x12\x1e\n" +
"\n" +
@@ -4671,7 +4697,8 @@ const file_daemon_proto_rawDesc = "" +
"\fpreSharedKey\x18\x04 \x01(\tR\fpreSharedKey\x12\x1a\n" +
"\badminURL\x18\x05 \x01(\tR\badminURL\x12$\n" +
"\rinterfaceName\x18\x06 \x01(\tR\rinterfaceName\x12$\n" +
"\rwireguardPort\x18\a \x01(\x03R\rwireguardPort\x12.\n" +
"\rwireguardPort\x18\a \x01(\x03R\rwireguardPort\x12\x10\n" +
"\x03mtu\x18\b \x01(\x03R\x03mtu\x12.\n" +
"\x12disableAutoConnect\x18\t \x01(\bR\x12disableAutoConnect\x12*\n" +
"\x10serverSSHAllowed\x18\n" +
" \x01(\bR\x10serverSSHAllowed\x12*\n" +
@@ -4885,7 +4912,7 @@ const file_daemon_proto_rawDesc = "" +
"\busername\x18\x02 \x01(\tH\x01R\busername\x88\x01\x01B\x0e\n" +
"\f_profileNameB\v\n" +
"\t_username\"\x17\n" +
"\x15SwitchProfileResponse\"\xef\f\n" +
"\x15SwitchProfileResponse\"\x8e\r\n" +
"\x10SetConfigRequest\x12\x1a\n" +
"\busername\x18\x01 \x01(\tR\busername\x12 \n" +
"\vprofileName\x18\x02 \x01(\tR\vprofileName\x12$\n" +
@@ -4917,7 +4944,8 @@ const file_daemon_proto_rawDesc = "" +
"\n" +
"dns_labels\x18\x19 \x03(\tR\tdnsLabels\x12&\n" +
"\x0ecleanDNSLabels\x18\x1a \x01(\bR\x0ecleanDNSLabels\x12J\n" +
"\x10dnsRouteInterval\x18\x1b \x01(\v2\x19.google.protobuf.DurationH\x10R\x10dnsRouteInterval\x88\x01\x01B\x13\n" +
"\x10dnsRouteInterval\x18\x1b \x01(\v2\x19.google.protobuf.DurationH\x10R\x10dnsRouteInterval\x88\x01\x01\x12\x15\n" +
"\x03mtu\x18\x1c \x01(\x03H\x11R\x03mtu\x88\x01\x01B\x13\n" +
"\x11_rosenpassEnabledB\x10\n" +
"\x0e_interfaceNameB\x10\n" +
"\x0e_wireguardPortB\x17\n" +
@@ -4934,7 +4962,8 @@ const file_daemon_proto_rawDesc = "" +
"\x16_disable_notificationsB\x18\n" +
"\x16_lazyConnectionEnabledB\x10\n" +
"\x0e_block_inboundB\x13\n" +
"\x11_dnsRouteInterval\"\x13\n" +
"\x11_dnsRouteIntervalB\x06\n" +
"\x04_mtu\"\x13\n" +
"\x11SetConfigResponse\"Q\n" +
"\x11AddProfileRequest\x12\x1a\n" +
"\busername\x18\x01 \x01(\tR\busername\x12 \n" +

33
client/proto/daemon.proto
View File

@@ -156,6 +156,8 @@ message LoginRequest {
optional string profileName = 30;
optional string username = 31;
optional int64 mtu = 32;
}
message LoginResponse {
@@ -223,6 +225,8 @@ message GetConfigResponse {
int64 wireguardPort = 7;
int64 mtu = 8;
bool disableAutoConnect = 9;
bool serverSSHAllowed = 10;
@@ -538,36 +542,36 @@ message SetConfigRequest {
string profileName = 2;
// managementUrl to authenticate.
string managementUrl = 3;
// adminUrl to manage keys.
string adminURL = 4;
optional bool rosenpassEnabled = 5;
optional string interfaceName = 6;
optional int64 wireguardPort = 7;
optional string optionalPreSharedKey = 8;
optional bool disableAutoConnect = 9;
optional bool serverSSHAllowed = 10;
optional bool rosenpassPermissive = 11;
optional bool networkMonitor = 12;
optional bool disable_client_routes = 13;
optional bool disable_server_routes = 14;
optional bool disable_dns = 15;
optional bool disable_firewall = 16;
optional bool block_lan_access = 17;
optional bool disable_notifications = 18;
optional bool lazyConnectionEnabled = 19;
optional bool block_inbound = 20;
repeated string natExternalIPs = 21;
@@ -583,6 +587,7 @@ message SetConfigRequest {
optional google.protobuf.Duration dnsRouteInterval = 27;
optional int64 mtu = 28;
}
message SetConfigResponse{}
@@ -633,4 +638,4 @@ message GetFeaturesRequest{}
message GetFeaturesResponse{
bool disable_profiles = 1;
bool disable_update_settings = 2;
}
}

7
client/server/server.go
View File

@@ -400,6 +400,11 @@ func (s *Server) SetConfig(callerCtx context.Context, msg *proto.SetConfigReques
config.LazyConnectionEnabled = msg.LazyConnectionEnabled
config.BlockInbound = msg.BlockInbound
if msg.Mtu != nil {
mtu := uint16(*msg.Mtu)
config.MTU = &mtu
}
if _, err := profilemanager.UpdateConfig(config); err != nil {
log.Errorf("failed to update profile config: %v", err)
return nil, fmt.Errorf("failed to update profile config: %w", err)
@@ -484,6 +489,7 @@ func (s *Server) Login(callerCtx context.Context, msg *proto.LoginRequest) (*pro
// nolint
ctx = context.WithValue(ctx, system.DeviceNameCtxKey, msg.Hostname)
}
s.mutex.Unlock()
config, err := s.getConfig(activeProf)
@@ -1105,6 +1111,7 @@ func (s *Server) GetConfig(ctx context.Context, req *proto.GetConfigRequest) (*p
AdminURL: adminURL.String(),
InterfaceName: cfg.WgIface,
WireguardPort: int64(cfg.WgPort),
Mtu: int64(cfg.MTU),
DisableAutoConnect: cfg.DisableAutoConnect,
ServerSSHAllowed: *cfg.ServerSSHAllowed,
RosenpassEnabled: cfg.RosenpassEnabled,

39
client/ui/client_ui.go
View File

@@ -257,6 +257,7 @@ type serviceClient struct {
iPreSharedKey *widget.Entry
iInterfaceName *widget.Entry
iInterfacePort *widget.Entry
iMTU *widget.Entry
// switch elements for settings form
sRosenpassPermissive *widget.Check
@@ -272,6 +273,7 @@ type serviceClient struct {
RosenpassPermissive bool
interfaceName string
interfacePort int
mtu uint16
networkMonitor bool
disableDNS bool
disableClientRoutes bool
@@ -413,6 +415,7 @@ func (s *serviceClient) showSettingsUI() {
s.iPreSharedKey = widget.NewPasswordEntry()
s.iInterfaceName = widget.NewEntry()
s.iInterfacePort = widget.NewEntry()
s.iMTU = widget.NewEntry()
s.sRosenpassPermissive = widget.NewCheck("Enable Rosenpass permissive mode", nil)
@@ -446,6 +449,7 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
{Text: "Quantum-Resistance", Widget: s.sRosenpassPermissive},
{Text: "Interface Name", Widget: s.iInterfaceName},
{Text: "Interface Port", Widget: s.iInterfacePort},
{Text: "MTU", Widget: s.iMTU},
{Text: "Management URL", Widget: s.iMngURL},
{Text: "Pre-shared Key", Widget: s.iPreSharedKey},
{Text: "Log File", Widget: s.iLogFile},
@@ -482,6 +486,21 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
return
}
var mtu int64
mtuText := strings.TrimSpace(s.iMTU.Text)
if mtuText != "" {
var err error
mtu, err = strconv.ParseInt(mtuText, 10, 64)
if err != nil {
dialog.ShowError(errors.New("Invalid MTU value"), s.wSettings)
return
}
if mtu < iface.MinMTU || mtu > iface.MaxMTU {
dialog.ShowError(fmt.Errorf("MTU must be between %d and %d bytes", iface.MinMTU, iface.MaxMTU), s.wSettings)
return
}
}
iMngURL := strings.TrimSpace(s.iMngURL.Text)
defer s.wSettings.Close()
@@ -490,6 +509,7 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
if s.managementURL != iMngURL || s.preSharedKey != s.iPreSharedKey.Text ||
s.RosenpassPermissive != s.sRosenpassPermissive.Checked ||
s.interfaceName != s.iInterfaceName.Text || s.interfacePort != int(port) ||
s.mtu != uint16(mtu) ||
s.networkMonitor != s.sNetworkMonitor.Checked ||
s.disableDNS != s.sDisableDNS.Checked ||
s.disableClientRoutes != s.sDisableClientRoutes.Checked ||
@@ -498,6 +518,7 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
s.managementURL = iMngURL
s.preSharedKey = s.iPreSharedKey.Text
s.mtu = uint16(mtu)
currUser, err := user.Current()
if err != nil {
@@ -508,7 +529,7 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
var req proto.SetConfigRequest
req.ProfileName = activeProf.Name
req.Username = currUser.Username
if iMngURL != "" {
req.ManagementUrl = iMngURL
}
@@ -516,6 +537,9 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
req.RosenpassPermissive = &s.sRosenpassPermissive.Checked
req.InterfaceName = &s.iInterfaceName.Text
req.WireguardPort = &port
if mtu > 0 {
req.Mtu = &mtu
}
req.NetworkMonitor = &s.sNetworkMonitor.Checked
req.DisableDns = &s.sDisableDNS.Checked
req.DisableClientRoutes = &s.sDisableClientRoutes.Checked
@@ -1088,6 +1112,7 @@ func (s *serviceClient) getSrvConfig() {
s.RosenpassPermissive = cfg.RosenpassPermissive
s.interfaceName = cfg.WgIface
s.interfacePort = cfg.WgPort
s.mtu = cfg.MTU
s.networkMonitor = *cfg.NetworkMonitor
s.disableDNS = cfg.DisableDNS
@@ -1100,6 +1125,12 @@ func (s *serviceClient) getSrvConfig() {
s.iPreSharedKey.SetText(cfg.PreSharedKey)
s.iInterfaceName.SetText(cfg.WgIface)
s.iInterfacePort.SetText(strconv.Itoa(cfg.WgPort))
if cfg.MTU != 0 {
s.iMTU.SetText(strconv.Itoa(int(cfg.MTU)))
} else {
s.iMTU.SetText("")
s.iMTU.SetPlaceHolder(strconv.Itoa(int(iface.DefaultMTU)))
}
s.sRosenpassPermissive.SetChecked(cfg.RosenpassPermissive)
if !cfg.RosenpassEnabled {
s.sRosenpassPermissive.Disable()
@@ -1160,6 +1191,12 @@ func protoConfigToConfig(cfg *proto.GetConfigResponse) *profilemanager.Config {
config.WgPort = iface.DefaultWgPort
}
if cfg.Mtu != 0 {
config.MTU = uint16(cfg.Mtu)
} else {
config.MTU = iface.DefaultMTU
}
config.DisableAutoConnect = cfg.DisableAutoConnect
config.ServerSSHAllowed = &cfg.ServerSSHAllowed
config.RosenpassEnabled = cfg.RosenpassEnabled

7
relay/test/benchmark_test.go
View File

@@ -13,10 +13,11 @@ import (
"github.com/pion/logging"
"github.com/pion/turn/v3"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/relay/server"
"github.com/netbirdio/netbird/shared/relay/auth/allow"
"github.com/netbirdio/netbird/shared/relay/auth/hmac"
"github.com/netbirdio/netbird/shared/relay/client"
"github.com/netbirdio/netbird/relay/server"
"github.com/netbirdio/netbird/util"
)
@@ -100,7 +101,7 @@ func transfer(t *testing.T, testData []byte, peerPairs int) {
clientsSender := make([]*client.Client, peerPairs)
for i := 0; i < cap(clientsSender); i++ {
c := client.NewClient(serverConnURL, hmacTokenStore, "sender-"+fmt.Sprint(i))
c := client.NewClient(serverConnURL, hmacTokenStore, "sender-"+fmt.Sprint(i), iface.DefaultMTU)
err := c.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
@@ -110,7 +111,7 @@ func transfer(t *testing.T, testData []byte, peerPairs int) {
clientsReceiver := make([]*client.Client, peerPairs)
for i := 0; i < cap(clientsReceiver); i++ {
c := client.NewClient(serverConnURL, hmacTokenStore, "receiver-"+fmt.Sprint(i))
c := client.NewClient(serverConnURL, hmacTokenStore, "receiver-"+fmt.Sprint(i), iface.DefaultMTU)
err := c.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)

5
relay/testec2/relay.go
View File

@@ -11,6 +11,7 @@ import (
log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/shared/relay/auth/hmac"
"github.com/netbirdio/netbird/shared/relay/client"
)
@@ -70,7 +71,7 @@ func prepareConnsSender(serverConnURL string, peerPairs int) []net.Conn {
ctx := context.Background()
clientsSender := make([]*client.Client, peerPairs)
for i := 0; i < cap(clientsSender); i++ {
c := client.NewClient(serverConnURL, hmacTokenStore, "sender-"+fmt.Sprint(i))
c := client.NewClient(serverConnURL, hmacTokenStore, "sender-"+fmt.Sprint(i), iface.DefaultMTU)
if err := c.Connect(ctx); err != nil {
log.Fatalf("failed to connect to server: %s", err)
}
@@ -156,7 +157,7 @@ func runReader(conn net.Conn) time.Duration {
func prepareConnsReceiver(serverConnURL string, peerPairs int) []net.Conn {
clientsReceiver := make([]*client.Client, peerPairs)
for i := 0; i < cap(clientsReceiver); i++ {
c := client.NewClient(serverConnURL, hmacTokenStore, "receiver-"+fmt.Sprint(i))
c := client.NewClient(serverConnURL, hmacTokenStore, "receiver-"+fmt.Sprint(i), iface.DefaultMTU)
err := c.Connect(context.Background())
if err != nil {
log.Fatalf("failed to connect to server: %s", err)

590
shared/management/proto/management.pb.go
View File

@@ -1,19 +1,18 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.26.0
// protoc v3.21.12
// protoc v4.24.3
// source: management.proto
package proto
import (
reflect "reflect"
sync "sync"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
durationpb "google.golang.org/protobuf/types/known/durationpb"
timestamppb "google.golang.org/protobuf/types/known/timestamppb"
reflect "reflect"
sync "sync"
)
const (
@@ -1650,6 +1649,7 @@ type PeerConfig struct {
Fqdn string `protobuf:"bytes,4,opt,name=fqdn,proto3" json:"fqdn,omitempty"`
RoutingPeerDnsResolutionEnabled bool `protobuf:"varint,5,opt,name=RoutingPeerDnsResolutionEnabled,proto3" json:"RoutingPeerDnsResolutionEnabled,omitempty"`
LazyConnectionEnabled bool `protobuf:"varint,6,opt,name=LazyConnectionEnabled,proto3" json:"LazyConnectionEnabled,omitempty"`
Mtu int32 `protobuf:"varint,7,opt,name=mtu,proto3" json:"mtu,omitempty"`
}
func (x *PeerConfig) Reset() {
@@ -1726,6 +1726,13 @@ func (x *PeerConfig) GetLazyConnectionEnabled() bool {
return false
}
func (x *PeerConfig) GetMtu() int32 {
if x != nil {
return x.Mtu
}
return 0
}
// NetworkMap represents a network state of the peer with the corresponding configuration parameters to establish peer-to-peer connections
type NetworkMap struct {
state protoimpl.MessageState
@@ -3569,7 +3576,7 @@ var file_management_proto_rawDesc = []byte{
0x68, 0x6f, 0x73, 0x74, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x12, 0x0a, 0x04, 0x75, 0x73,
0x65, 0x72, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x75, 0x73, 0x65, 0x72, 0x12, 0x1a,
0x0a, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09,
0x52, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x22, 0x81, 0x02, 0x0a, 0x0a, 0x50,
0x52, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x22, 0x93, 0x02, 0x0a, 0x0a, 0x50,
0x65, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x18, 0x0a, 0x07, 0x61, 0x64, 0x64,
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@@ -3585,296 +3592,297 @@ var file_management_proto_rawDesc = []byte{
0x6e, 0x45, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x12, 0x34, 0x0a, 0x15, 0x4c, 0x61, 0x7a, 0x79,
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}
var (

2
shared/management/proto/management.proto
View File

@@ -264,6 +264,8 @@ message PeerConfig {
bool RoutingPeerDnsResolutionEnabled = 5;
bool LazyConnectionEnabled = 6;
int32 mtu = 7;
}
// NetworkMap represents a network state of the peer with the corresponding configuration parameters to establish peer-to-peer connections

17
shared/relay/client/client.go
View File

@@ -9,6 +9,7 @@ import (
log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/iface"
auth "github.com/netbirdio/netbird/shared/relay/auth/hmac"
"github.com/netbirdio/netbird/shared/relay/client/dialer"
"github.com/netbirdio/netbird/shared/relay/client/dialer/quic"
@@ -143,10 +144,12 @@ type Client struct {
listenerMutex sync.Mutex
stateSubscription *PeersStateSubscription
mtu uint16
}
// NewClient creates a new client for the relay server. The client is not connected to the server until the Connect
func NewClient(serverURL string, authTokenStore *auth.TokenStore, peerID string) *Client {
func NewClient(serverURL string, authTokenStore *auth.TokenStore, peerID string, mtu uint16) *Client {
hashedID := messages.HashID(peerID)
relayLog := log.WithFields(log.Fields{"relay": serverURL})
@@ -155,6 +158,7 @@ func NewClient(serverURL string, authTokenStore *auth.TokenStore, peerID string)
connectionURL: serverURL,
authTokenStore: authTokenStore,
hashedID: hashedID,
mtu: mtu,
bufPool: &sync.Pool{
New: func() any {
buf := make([]byte, bufferSize)
@@ -292,7 +296,16 @@ func (c *Client) Close() error {
}
func (c *Client) connect(ctx context.Context) (*RelayAddr, error) {
rd := dialer.NewRaceDial(c.log, dialer.DefaultConnectionTimeout, c.connectionURL, quic.Dialer{}, ws.Dialer{})
// Force WebSocket for MTUs larger than default to avoid QUIC DATAGRAM frame size issues
var dialers []dialer.DialeFn
if c.mtu > 0 && c.mtu > iface.DefaultMTU {
c.log.Infof("MTU %d exceeds default (%d), forcing WebSocket transport to avoid DATAGRAM frame size issues", c.mtu, iface.DefaultMTU)
dialers = []dialer.DialeFn{ws.Dialer{}}
} else {
dialers = []dialer.DialeFn{quic.Dialer{}, ws.Dialer{}}
}
rd := dialer.NewRaceDial(c.log, dialer.DefaultConnectionTimeout, c.connectionURL, dialers...)
conn, err := rd.Dial()
if err != nil {
return nil, err

39
shared/relay/client/client_test.go
View File

@@ -10,6 +10,7 @@ import (
log "github.com/sirupsen/logrus"
"go.opentelemetry.io/otel"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/shared/relay/auth/allow"
"github.com/netbirdio/netbird/shared/relay/auth/hmac"
"github.com/netbirdio/netbird/util"
@@ -63,7 +64,7 @@ func TestClient(t *testing.T) {
t.Fatalf("failed to start server: %s", err)
}
t.Log("alice connecting to server")
clientAlice := NewClient(serverURL, hmacTokenStore, "alice")
clientAlice := NewClient(serverURL, hmacTokenStore, "alice", iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
@@ -71,7 +72,7 @@ func TestClient(t *testing.T) {
defer clientAlice.Close()
t.Log("placeholder connecting to server")
clientPlaceHolder := NewClient(serverURL, hmacTokenStore, "clientPlaceHolder")
clientPlaceHolder := NewClient(serverURL, hmacTokenStore, "clientPlaceHolder", iface.DefaultMTU)
err = clientPlaceHolder.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
@@ -79,7 +80,7 @@ func TestClient(t *testing.T) {
defer clientPlaceHolder.Close()
t.Log("Bob connecting to server")
clientBob := NewClient(serverURL, hmacTokenStore, "bob")
clientBob := NewClient(serverURL, hmacTokenStore, "bob", iface.DefaultMTU)
err = clientBob.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
@@ -137,7 +138,7 @@ func TestRegistration(t *testing.T) {
t.Fatalf("failed to start server: %s", err)
}
clientAlice := NewClient(serverURL, hmacTokenStore, "alice")
clientAlice := NewClient(serverURL, hmacTokenStore, "alice", iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
_ = srv.Shutdown(ctx)
@@ -177,7 +178,7 @@ func TestRegistrationTimeout(t *testing.T) {
_ = fakeTCPListener.Close()
}(fakeTCPListener)
clientAlice := NewClient("127.0.0.1:1234", hmacTokenStore, "alice")
clientAlice := NewClient("127.0.0.1:1234", hmacTokenStore, "alice", iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err == nil {
t.Errorf("failed to connect to server: %s", err)
@@ -218,7 +219,7 @@ func TestEcho(t *testing.T) {
t.Fatalf("failed to start server: %s", err)
}
clientAlice := NewClient(serverURL, hmacTokenStore, idAlice)
clientAlice := NewClient(serverURL, hmacTokenStore, idAlice, iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
@@ -230,7 +231,7 @@ func TestEcho(t *testing.T) {
}
}()
clientBob := NewClient(serverURL, hmacTokenStore, idBob)
clientBob := NewClient(serverURL, hmacTokenStore, idBob, iface.DefaultMTU)
err = clientBob.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
@@ -308,7 +309,7 @@ func TestBindToUnavailabePeer(t *testing.T) {
t.Fatalf("failed to start server: %s", err)
}
clientAlice := NewClient(serverURL, hmacTokenStore, "alice")
clientAlice := NewClient(serverURL, hmacTokenStore, "alice", iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
t.Errorf("failed to connect to server: %s", err)
@@ -354,13 +355,13 @@ func TestBindReconnect(t *testing.T) {
t.Fatalf("failed to start server: %s", err)
}
clientAlice := NewClient(serverURL, hmacTokenStore, "alice")
clientAlice := NewClient(serverURL, hmacTokenStore, "alice", iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
}
clientBob := NewClient(serverURL, hmacTokenStore, "bob")
clientBob := NewClient(serverURL, hmacTokenStore, "bob", iface.DefaultMTU)
err = clientBob.Connect(ctx)
if err != nil {
t.Errorf("failed to connect to server: %s", err)
@@ -382,7 +383,7 @@ func TestBindReconnect(t *testing.T) {
t.Errorf("failed to close client: %s", err)
}
clientAlice = NewClient(serverURL, hmacTokenStore, "alice")
clientAlice = NewClient(serverURL, hmacTokenStore, "alice", iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
t.Errorf("failed to connect to server: %s", err)
@@ -455,13 +456,13 @@ func TestCloseConn(t *testing.T) {
t.Fatalf("failed to start server: %s", err)
}
bob := NewClient(serverURL, hmacTokenStore, "bob")
bob := NewClient(serverURL, hmacTokenStore, "bob", iface.DefaultMTU)
err = bob.Connect(ctx)
if err != nil {
t.Errorf("failed to connect to server: %s", err)
}
clientAlice := NewClient(serverURL, hmacTokenStore, "alice")
clientAlice := NewClient(serverURL, hmacTokenStore, "alice", iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
t.Errorf("failed to connect to server: %s", err)
@@ -517,13 +518,13 @@ func TestCloseRelayConn(t *testing.T) {
t.Fatalf("failed to start server: %s", err)
}
bob := NewClient(serverURL, hmacTokenStore, "bob")
bob := NewClient(serverURL, hmacTokenStore, "bob", iface.DefaultMTU)
err = bob.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
}
clientAlice := NewClient(serverURL, hmacTokenStore, "alice")
clientAlice := NewClient(serverURL, hmacTokenStore, "alice", iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
@@ -571,7 +572,7 @@ func TestCloseByServer(t *testing.T) {
idAlice := "alice"
log.Debugf("connect by alice")
relayClient := NewClient(serverURL, hmacTokenStore, idAlice)
relayClient := NewClient(serverURL, hmacTokenStore, idAlice, iface.DefaultMTU)
if err = relayClient.Connect(ctx); err != nil {
log.Fatalf("failed to connect to server: %s", err)
}
@@ -627,7 +628,7 @@ func TestCloseByClient(t *testing.T) {
idAlice := "alice"
log.Debugf("connect by alice")
relayClient := NewClient(serverURL, hmacTokenStore, idAlice)
relayClient := NewClient(serverURL, hmacTokenStore, idAlice, iface.DefaultMTU)
err = relayClient.Connect(ctx)
if err != nil {
log.Fatalf("failed to connect to server: %s", err)
@@ -678,7 +679,7 @@ func TestCloseNotDrainedChannel(t *testing.T) {
t.Fatalf("failed to start server: %s", err)
}
clientAlice := NewClient(serverURL, hmacTokenStore, idAlice)
clientAlice := NewClient(serverURL, hmacTokenStore, idAlice, iface.DefaultMTU)
err = clientAlice.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)
@@ -690,7 +691,7 @@ func TestCloseNotDrainedChannel(t *testing.T) {
}
}()
clientBob := NewClient(serverURL, hmacTokenStore, idBob)
clientBob := NewClient(serverURL, hmacTokenStore, idBob, iface.DefaultMTU)
err = clientBob.Connect(ctx)
if err != nil {
t.Fatalf("failed to connect to server: %s", err)

8
shared/relay/client/manager.go
View File

@@ -63,20 +63,24 @@ type Manager struct {
onDisconnectedListeners map[string]*list.List
onReconnectedListenerFn func()
listenerLock sync.Mutex
mtu uint16
}
// NewManager creates a new manager instance.
// The serverURL address can be empty. In this case, the manager will not serve.
func NewManager(ctx context.Context, serverURLs []string, peerID string) *Manager {
func NewManager(ctx context.Context, serverURLs []string, peerID string, mtu uint16) *Manager {
tokenStore := &relayAuth.TokenStore{}
m := &Manager{
ctx: ctx,
peerID: peerID,
tokenStore: tokenStore,
mtu: mtu,
serverPicker: &ServerPicker{
TokenStore: tokenStore,
PeerID: peerID,
MTU: mtu,
},
relayClients: make(map[string]*RelayTrack),
onDisconnectedListeners: make(map[string]*list.List),
@@ -253,7 +257,7 @@ func (m *Manager) openConnVia(ctx context.Context, serverAddress, peerKey string
m.relayClients[serverAddress] = rt
m.relayClientsMutex.Unlock()
relayClient := NewClient(serverAddress, m.tokenStore, m.peerID)
relayClient := NewClient(serverAddress, m.tokenStore, m.peerID, m.mtu)
err := relayClient.Connect(m.ctx)
if err != nil {
rt.err = err

23
shared/relay/client/manager_test.go
View File

@@ -8,14 +8,15 @@ import (
log "github.com/sirupsen/logrus"
"go.opentelemetry.io/otel"
"github.com/netbirdio/netbird/shared/relay/auth/allow"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/relay/server"
"github.com/netbirdio/netbird/shared/relay/auth/allow"
)
func TestEmptyURL(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
mgr := NewManager(ctx, nil, "alice")
mgr := NewManager(ctx, nil, "alice", iface.DefaultMTU)
err := mgr.Serve()
if err == nil {
t.Errorf("expected error, got nil")
@@ -90,12 +91,12 @@ func TestForeignConn(t *testing.T) {
mCtx, cancel := context.WithCancel(ctx)
defer cancel()
clientAlice := NewManager(mCtx, toURL(lstCfg1), "alice")
clientAlice := NewManager(mCtx, toURL(lstCfg1), "alice", iface.DefaultMTU)
if err := clientAlice.Serve(); err != nil {
t.Fatalf("failed to serve manager: %s", err)
}
clientBob := NewManager(mCtx, toURL(srvCfg2), "bob")
clientBob := NewManager(mCtx, toURL(srvCfg2), "bob", iface.DefaultMTU)
if err := clientBob.Serve(); err != nil {
t.Fatalf("failed to serve manager: %s", err)
}
@@ -197,12 +198,12 @@ func TestForeginConnClose(t *testing.T) {
mCtx, cancel := context.WithCancel(ctx)
defer cancel()
mgrBob := NewManager(mCtx, toURL(srvCfg2), "bob")
mgrBob := NewManager(mCtx, toURL(srvCfg2), "bob", iface.DefaultMTU)
if err := mgrBob.Serve(); err != nil {
t.Fatalf("failed to serve manager: %s", err)
}
mgr := NewManager(mCtx, toURL(srvCfg1), "alice")
mgr := NewManager(mCtx, toURL(srvCfg1), "alice", iface.DefaultMTU)
err = mgr.Serve()
if err != nil {
t.Fatalf("failed to serve manager: %s", err)
@@ -282,7 +283,7 @@ func TestForeignAutoClose(t *testing.T) {
t.Log("connect to server 1.")
mCtx, cancel := context.WithCancel(ctx)
defer cancel()
mgr := NewManager(mCtx, toURL(srvCfg1), idAlice)
mgr := NewManager(mCtx, toURL(srvCfg1), idAlice, iface.DefaultMTU)
err = mgr.Serve()
if err != nil {
t.Fatalf("failed to serve manager: %s", err)
@@ -353,13 +354,13 @@ func TestAutoReconnect(t *testing.T) {
mCtx, cancel := context.WithCancel(ctx)
defer cancel()
clientBob := NewManager(mCtx, toURL(srvCfg), "bob")
clientBob := NewManager(mCtx, toURL(srvCfg), "bob", iface.DefaultMTU)
err = clientBob.Serve()
if err != nil {
t.Fatalf("failed to serve manager: %s", err)
}
clientAlice := NewManager(mCtx, toURL(srvCfg), "alice")
clientAlice := NewManager(mCtx, toURL(srvCfg), "alice", iface.DefaultMTU)
err = clientAlice.Serve()
if err != nil {
t.Fatalf("failed to serve manager: %s", err)
@@ -428,12 +429,12 @@ func TestNotifierDoubleAdd(t *testing.T) {
mCtx, cancel := context.WithCancel(ctx)
defer cancel()
clientBob := NewManager(mCtx, toURL(listenerCfg1), "bob")
clientBob := NewManager(mCtx, toURL(listenerCfg1), "bob", iface.DefaultMTU)
if err = clientBob.Serve(); err != nil {
t.Fatalf("failed to serve manager: %s", err)
}
clientAlice := NewManager(mCtx, toURL(listenerCfg1), "alice")
clientAlice := NewManager(mCtx, toURL(listenerCfg1), "alice", iface.DefaultMTU)
if err = clientAlice.Serve(); err != nil {
t.Fatalf("failed to serve manager: %s", err)
}

3
shared/relay/client/picker.go
View File

@@ -30,6 +30,7 @@ type ServerPicker struct {
TokenStore *auth.TokenStore
ServerURLs atomic.Value
PeerID string
MTU uint16
}
func (sp *ServerPicker) PickServer(parentCtx context.Context) (*Client, error) {
@@ -70,7 +71,7 @@ func (sp *ServerPicker) PickServer(parentCtx context.Context) (*Client, error) {
func (sp *ServerPicker) startConnection(ctx context.Context, resultChan chan connResult, url string) {
log.Infof("try to connecting to relay server: %s", url)
relayClient := NewClient(url, sp.TokenStore, sp.PeerID)
relayClient := NewClient(url, sp.TokenStore, sp.PeerID, sp.MTU)
err := relayClient.Connect(ctx)
resultChan <- connResult{
RelayClient: relayClient,

6
sharedsock/example/main.go
View File

@@ -5,14 +5,16 @@ import (
"os"
"os/signal"
"github.com/netbirdio/netbird/sharedsock"
log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/sharedsock"
)
func main() {
port := 51820
rawSock, err := sharedsock.Listen(port, sharedsock.NewIncomingSTUNFilter())
rawSock, err := sharedsock.Listen(port, sharedsock.NewIncomingSTUNFilter(), iface.DefaultMTU)
if err != nil {
panic(err)
}

14
sharedsock/sock_linux.go
View File

@@ -36,6 +36,7 @@ type SharedSocket struct {
conn4 *socket.Conn
conn6 *socket.Conn
port int
mtu uint16
routerMux sync.RWMutex
router routing.Router
packetDemux chan rcvdPacket
@@ -56,12 +57,19 @@ var writeSerializerOptions = gopacket.SerializeOptions{
FixLengths: true,
}
// Maximum overhead for IP + UDP headers on raw socket
// IPv4: max 60 bytes (20 base + 40 options) + UDP 8 bytes = 68 bytes
// IPv6: 40 bytes + UDP 8 bytes = 48 bytes
// We use the maximum (68) for both IPv4 and IPv6
const maxIPUDPOverhead = 68
// Listen creates an IPv4 and IPv6 raw sockets, starts a reader and routing table routines
func Listen(port int, filter BPFFilter) (_ net.PacketConn, err error) {
func Listen(port int, filter BPFFilter, mtu uint16) (_ net.PacketConn, err error) {
ctx, cancel := context.WithCancel(context.Background())
rawSock := &SharedSocket{
ctx: ctx,
cancel: cancel,
mtu: mtu,
port: port,
packetDemux: make(chan rcvdPacket),
}
@@ -222,8 +230,10 @@ func (s *SharedSocket) Close() error {
// read start a read loop for a specific receiver and sends the packet to the packetDemux channel
func (s *SharedSocket) read(receiver receiver) {
// Buffer reuse is safe: packetDemux is unbuffered, so read() blocks until
// ReadFrom() synchronously processes the packet before next iteration
buf := make([]byte, s.mtu+maxIPUDPOverhead)
for {
buf := make([]byte, 1500)
n, addr, err := receiver(s.ctx, buf, 0)
select {
case <-s.ctx.Done():

8
sharedsock/sock_linux_test.go
View File

@@ -21,7 +21,7 @@ func TestShouldReadSTUNOnReadFrom(t *testing.T) {
// create raw socket on a port
testingPort := 51821
rawSock, err := Listen(testingPort, NewIncomingSTUNFilter())
rawSock, err := Listen(testingPort, NewIncomingSTUNFilter(), 1280)
require.NoError(t, err, "received an error while creating STUN listener, error: %s", err)
err = rawSock.SetReadDeadline(time.Now().Add(3 * time.Second))
require.NoError(t, err, "unable to set deadline, error: %s", err)
@@ -76,7 +76,7 @@ func TestShouldReadSTUNOnReadFrom(t *testing.T) {
func TestShouldNotReadNonSTUNPackets(t *testing.T) {
testingPort := 39439
rawSock, err := Listen(testingPort, NewIncomingSTUNFilter())
rawSock, err := Listen(testingPort, NewIncomingSTUNFilter(), 1280)
require.NoError(t, err, "received an error while creating STUN listener, error: %s", err)
defer rawSock.Close()
@@ -110,7 +110,7 @@ func TestWriteTo(t *testing.T) {
defer udpListener.Close()
testingPort := 39440
rawSock, err := Listen(testingPort, NewIncomingSTUNFilter())
rawSock, err := Listen(testingPort, NewIncomingSTUNFilter(), 1280)
require.NoError(t, err, "received an error while creating STUN listener, error: %s", err)
defer rawSock.Close()
@@ -144,7 +144,7 @@ func TestWriteTo(t *testing.T) {
}
func TestSharedSocket_Close(t *testing.T) {
rawSock, err := Listen(39440, NewIncomingSTUNFilter())
rawSock, err := Listen(39440, NewIncomingSTUNFilter(), 1280)
require.NoError(t, err, "received an error while creating STUN listener, error: %s", err)
errGrp := errgroup.Group{}

2
sharedsock/sock_nolinux.go
View File

@@ -9,6 +9,6 @@ import (
)
// Listen is not supported on other platforms then Linux
func Listen(port int, filter BPFFilter) (net.PacketConn, error) {
func Listen(port int, filter BPFFilter, mtu uint16) (net.PacketConn, error) {
return nil, fmt.Errorf("not supported OS %s. SharedSocket is only supported on Linux", runtime.GOOS)
}